Senior Engineer, Network

NCS; Singapore; On-site; SGD 60,000 - 80,000; Full time

Job summary

A leading technology services provider in Singapore is seeking an Infra Engineer / Senior Engineer, Network. You will manage and troubleshoot network issues, mentor junior engineers, and ensure high availability and security across enterprise environments. The ideal candidate has 2-6 years of networking experience, advanced knowledge in routing and switching, and Cisco certification. Join a dynamic team that values adventure, excellence, integrity, ownership, and unity.

Qualifications

• At least 2–6 years of IT networking experience.
• Ideally experienced with Data Center Network technologies.
• Familiarity with Enterprise Network architectures.

Responsibilities

• Analyse incidents and technical issues impacting operations.
• Troubleshoot and resolve complex infrastructure issues.
• Mentor junior engineers on troubleshooting and incident management.

Skills

Advanced Routing and Switching

Advanced Wired and Wireless networks

Network Security (ACL, Firewall, VPN, ISE)

Network Performance Monitoring

Ansible

Python

Education

Cisco Certified Network Professional (CCNP)

Job description

We are looking for an Infra Engineer / Senior Engineer, Network to join our dynamic networking team. In this role, you will troubleshoot, resolve, and proactively manage network and infrastructure issues to ensure high availability, performance, and security across enterprise and data center environments. You will also mentor junior engineers, participate in incident management, and work closely with internal and external stakeholders.

What you will do?

• Analyse incidents and technical issues that impact infrastructure operations
• Troubleshoot and resolve network and infrastructure issues of varying complexity from moderate to high
• Own escalated incidents from Level 1 engineers through to closure ensuring timely updates and resolution
• Identify early warning signs or performance declines after upgrades, updates or maintenance activities
• Actively participate in the incident management process ensuring adherence to SLAs and producing incident reports when required
• Execute routine administration, configuration and support tasks according to established guidelines
• Review and implement change requests for minor network changes or upgrades
• Perform impact analysis for planned network maintenance, executing failovers where required to ensure service continuity
• Apply processes from infrastructure upgrade plans ensuring smooth rollouts with minimal disruption
• Maintain and update network documentation to reflect changes in infrastructure design or traffic flows
• Produce new documents and procedures to support repeatable routine tasks
• Update incident management systems with escalated cases and resolution details
• Mentor and guide Level 1 engineers helping them develop troubleshooting and incident management skills
• Collaborate with internal and external teams, escalating issues when necessary and ensuring seamless communication with stakeholders

Qualifications

• At least 2–6 years of IT networking experience
• Networking Knowledge:
  • Advanced Routing and Switching
  • Advanced Wired and Wireless networks
  • Network Security (ACL, Firewall, VPN, ISE)
  • Network Performance Monitoring
  • Specialization breakouts 1‑2 domains
• Cisco Certified Network Professional (CCNP) preferred

Additional Information

Ideally with experience in one or more areas below:

Data Center Network

• Nexus Switches (7K, 9K) & NX‑OS technologies:
  • OTV, vPC, Fex, VxLAN
  • Fabric‑Path, Anycast Gateway
  • Multicast
• Cisco ACI Technologies (SD‑DC):
  • L‑2, L‑3 Fabrics, VxLAN, Single‑POD Design
  • L‑2 Out, L‑3 Out networks
  • vPC, Anycast Gateway
  • VMM Domain Integration
  • L4‑L7 Services Integration
• Others (Good to have):
  • Application Delivery Controllers, LSLB, GSLB
  • NGFW, NGIPS, Application Detection Engines, Anti‑virus Anti‑Malware Engines
  • Bandwidth Management Systems
  • Secure Proxy Systems
  • DNS Technologies

Enterprise Network

• Wired Network:
  • 2‑Tier, 3‑Tier Architectures
  • MCE, SSO, NSF, Stack Switching
  • MP‑BGP, MPLS‑VPN, Vrf‑lite
  • Network Access Control, 802.1x, Posturing, Profiling
• Wireless Network:
  • Radio Design, Heat Map, Site Survey Tools
  • Wireless Security, Rogue AP detection & isolation
  • Wireless Network Analytics
  • Antenna Design and Signal Strength, data throughput

Software Defined Access Network

• • VxLAN, AutoQoS, QoS Anywhere
  • APIC‑EM, Cisco DNA Center
  • SD‑WAN

Security

• PKI Infrastructure
• NGFW, NGIPS, Application Detection Engines, Anti‑virus Anti‑Malware Engines
• Stealth Watch & AMP
• Cisco ISE
• Security Baseline of Network Equipment
• Vulnerability Assessment

Programmability

• Ansible, Python, Rest API
• OpenStack, OpenShift, UCSD

We are driven by our AEIOU beliefs—Adventure, Excellence, Integrity, Ownership, and Unity—and we seek individuals who embody these values in both their professional and personal lives. We are committed to our Impact: Valuing our clients, Growing our people, and Creating our future.

Together, we make the extraordinary happen.

Learn more about us at ncs.co and visit our LinkedIn career site.

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